Item type |
学術雑誌論文 / Journal Article(1) |
公開日 |
2024-05-23 |
タイトル |
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言語 |
en |
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タイトル |
Co-deposited layers on gap surfaces of bulk tungsten divertor tiles in JET ITER-like wall: Directional effects and nanostructures |
言語 |
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言語 |
eng |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Tungsten divertor |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Deposition layer |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Dust |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Fuel retention |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
著者 |
TOKITANI, Masayuki
MIYAMOTO, Mitsutaka
MASUZAKI, Suguru
HATANO, Yuji
LEE, Sun Eui
OYA, Yasuhisa
KUROTAKI, Hironori
ASAKURA, Nobuyuki
NAKAMURA, Hirofumi
HAYASHI, Takumi
RUBEL, Marek
WIDDOWSON, Anna
LIKONEN, Jari
JET Contributors
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著者ID |
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内容記述タイプ |
Other |
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内容記述 |
ORCID 0000-0002-3744-2481 |
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言語 |
en |
抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Co-deposited layers on surfaces of bulk tungsten divertor tiles (W lamellae) from the first campaign of JET with the ITER-Like Wall (JET-ILW, 2011–2012) were examined by means of a cross-sectional transmission electron microscope observation. The focus was on geometrical effects in impurity deposition, mainly beryllium (Be), on surfaces located in the poloidal gap separating adjacent lamellae. The study was carried out on the sides (gap surfaces) of two W lamellae from Stack C (located on the outboard part of the horizontal section of the lower divertor), from the region most exposed to the plasma (lamella C23) and in the magnetic shadow of the upstream divertor module (lamella C3). The tile manufacturing process (cold rolling) left shallow grooves, i.e. structures classified as convex (hill) and concave (valley) regions. These regions are decisive for the deposition structure. The main results were: (i) two kinds of impurity deposition features, “homogeneous” and “directional”, have been distinguished; (ii) the directional ones were characterized by nanoscale inclined vertical stripes in the deposition layer; (iii) homogeneous deposition without directional features were in the valley region. The results clearly indicate the impact of the surface finish, even in the tile gaps, on the qualitative and quantitative aspects of deposition. |
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言語 |
en |
書誌情報 |
en : Nuclear Materials and Energy
巻 39,
号 June 2024,
p. 101678,
発行日 2024-05-18
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出版者 |
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言語 |
en |
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出版者 |
Elsevier |
ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
2352-1791 |
DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1016/j.nme.2024.101678 |
権利 |
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言語 |
en |
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権利情報 |
© 2024 The Authors. |
関連サイト |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1016/j.nme.2024.101678 |
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関連名称 |
Publisher version |
著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
NAIS |
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14024 |